Anti pollution portable oil heater

ABSTRACT

An anti-pollution portable oil heater which is adapted to be mounted on a mobile apparatus and arranged for oscillation or rotation about a vertical axis so as to spread the heat over wide areas such as orchids, warehouses and other locations where it is essential to heat both interior and exterior areas. The heater includes a pollution free oil burner having both a primary and a secondary combustion chamber to burn all pollutents resulting from the products of combustion. The secondary combustion chamber is surrounded by an insulating shield and is positioned in a cylindrical housing having an air supply fan at the upstream end thereof, which directs air over the secondary combustion chamber and to become heated thereby for discharge along with the products of combustion from the secondary combustion chamber into the area to be heated.

United States Patent [1 1 Grainger 111 1 3,738,798 1 June 12, 1973 ANTI-POLLUTION PORTABLE OIL Primary Examiner-Edward G. Favors HEATER v Attorney-Elton H. Brown, Jr. [76] Inventor: Lewis M. D. Grainger, Route 1, Glen I [22] Filed: 1972 An anti-pollution portable oil heater which is adapted [2]] Appl. No.: 242,928 to be mounted on a mobile apparatus and arranged for R I t S A won Data oscillation or rotation about a vertical axis so as to e f e pp spread the heat over wide areas such as orchids, ware- [63] commuamn'm'part of 8 Sept houses and other locations where it is essential to heat I971 both interior and exterior areas. The heater includes a pollution free oil burner having both a primary and a [52] US. Cl. 432/222, 431/351 secondary combustion chamber to bum a" pollutems CL resulting from the products of combustion The Fleld of Search 88, ondary combustion chamber is Surrounded an inslb 431/351 352 lating shield and is positioned in a cylindrical housing having an air supply fan at the upstream end thereof, [56] References C'ted which directs air over the secondary combustion cham- UN T STATES PATENTS her and to become heated thereby for discharge along 2,606,014 8/1952 Baumann 432/222 with the products of combustion from the secondary 2,654,219 10/1953 Zaba 432/222 X combustion chamber into the area to be heated. 2,879,837 3/1959 Downs 432/222 X 5 Claims, 3 Drawing Figures N r L r &

ANTI-POLLUTION PORTABLE OIL HEATER CROSS REFERENCE TO RELATED APPLICATION This application is a continuation-in-part of my copending application Ser. No. 182456, filed Sept. 21, 1971, and entitled Anti-Pollution Heating System.

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to portable oil heaters of the anti-pollution type.

2. Summary of the Invention The portable anti-pollution oil heater includes an oil burner having a primary and a secondary combustion chamber with auxiliary air supplied under pressure thereto. A cylinder surrounds the combustion chambers, oil burner, and a fan at the upstream end thereof to direct air over the secondary combustion chamber to be heated thereby and simultaneously supply auxiliary air thereto. The heated air along with the products of combustion from the burner are directed out of the discharge end of the heater into the area or space to be heated. A complete heater unit is adapted to be revolved or oscillated on a vertical axis so as to cover as much area as possible.

The primary object of the invention is to provide a pollution free portable oil heater for heating large areas both interior and exterior.

Other objects and advantages will become apparent in the following specification when considered in the light of the attached drawings.

- BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a rear elevation of the invention shown partially broken away and in section for convenience of illustration;

FIG. 2 is a fragmentary side elevation of the invention; and

FIG. 3 is an enlarged fragmentary vertical sectional view taken along the line 3-3 of FIG. 1, looking in the direction of the arrows.

DESCRIPTION OF THE PREFERRED EMBODIMENT Referring now to the drawings in detail, wherein like reference characters indicate like parts throughout the several figures, the reference numeral indicates generally a portable anti-pollution oil heater constructed in accordance with the invention.

'The heater 10 includes an elongate cylindrical housing 11 having an outwardly flared inlet end 12 integrally formed thereon. The housing 11 is supported on a frame 13 mounted in a yoke 14 which is mounted for rotation on a shaft 15 and supported on a ball bearing 16 carried by a mount 17. A set screw 18 engaged in a groove 19 in the shaft 15 retains the yoke 14 on the' A generally cylindrical insulation ring 25 is positioned centrally in the housing I1 intermediate the opposite ends thereof and is supported by a metallic shield 26 on the inner face thereof. The shield 26 is outwardly flared at 27 to direct air flowing through the housing 11 into the shield 26.

A conventional oil burner 28 of the type shown at 11 in my afore mentioned co-pending application has a conduit 28' extending therefrom axially of the housing 11 and has a primary combustion chamber 29 secured thereto identical to the primary combustion chamber 16 in my copending application. An electric motor 30 is provided with a shaft 31 with a fan 32 mounted thereon and extending outwardly to a point closely adjacent the housing 11. The fan 32 is adapted to move air through the housing 11 toward the discharge end 32 thereof. Agenerally cylindrical secondary combustion chamber 33 similar to the secondary combustion chamber 26 of my co-pending application is secured by a flange 34 to the outlet end of the primary combustion chamber 29 and is positioned axially of the housing 11 within the shield 26. The secondary combustion chamber 33 has a plurality ofbores 35 formed therein and corresponding to the bores 32 of the secondary combustion chamber 26 of my co-pending application in that they are arranged to direct air tangentially and downstream of the secondary combustion chamber 33.

An outlet bell 36 is mounted on the reduced diameter opening 37 of the secondary combustion chamber 33 to direct the products of combustion toward the downstream end 32 of the housing 11.

In the use and operation of the invention the oil burner is operated in a conventional manner with the combustion materials being retained momentarily in the primary combustion chamber 29 by the reduced diameter outlet 37 thereof. This insures the combustion of all the oil prior to the flow therefrom through the opening 37 into the secondary combustion chamber 33. Combustion is completed in the secondary combustion chamber as additional air is supplied thereto through the bores 35 in its surface. The 'walls of the secondary combustion chamber 33 become quite hot and heat the air coming in contact therewith within the shield 26 in the housing 11. The heated air mixes with the products of combustion being emitted by the secondary combustion chamber 33 through the bell 3 6 and are expelled from the outlet end 32 of the housing 11. The fan provides both the air to be heated by the secondary combustion chamber as well as the supply of air fed through the bores 35 into the secondary combustion chamber.

Rotation or oscillation of the housing 11 about the shaft 15 will direct the airheated by the heater 10 to any desired location in an orchid, warehouse or other vast area to be heated.

Having thus described the preferred embodiment of the invention it should be understood that numerous structural modifications and adaptations may be resorted to without departing from the spirit of the invention.

What is claimed is:

l. A portable anti-pollution oil burning heater comprising a generally cylindrical housing, means mounting said housing for oscillation or rotation about a vertical axis, an electric fan mounted in the inlet end of said housing with fan blades extending to a point closely adjacent the inner face of said housing, an oil burner including a primary combustion chamber mounted in said housing downstream of said fan, a secondary combustion chamber mounted in said housing downstream of said primary combustion chamber to receive products of combustion from said primary combustion chamber, a plurality of bores formed in the wall of said secondary combustion chamber to admit additional air thereto for completing the combustion of materials received from said primary combustion chamber with said bores being arranged to direct the air in a tangentical and downstream direction in said secondary combustion chamber.

2. A device as claimed in claim 1 wherein an insulating ring is positioned in said housing surrounding said secondary combustion chamber with the air from said fan passing between said insulating ring and said secinsure complete combustion of the oil. 

1. A portable anti-pollution oil burning heater comprising a generally cylindrical housing, means mounting said housing for oscillation or rotation about a vertical axis, an electric fan mounted in the inlet end of said housing with fan blades extending to a point closely adjacent the inner face of said housing, an oil burner including a primary combustion chamber mounted in said housing downstream of said fan, a secondary combustion chamber mounted in said housing downstream of said primary combustion chamber to receive products of combustion from said primary combustion chamber, a plurality of bores formed in the wall of said secondary combustion chamber to admit additional air thereto for completinG the combustion of materials received from said primary combustion chamber with said bores being arranged to direct the air in a tangentical and downstream direction in said secondary combustion chamber.
 2. A device as claimed in claim 1 wherein an insulating ring is positioned in said housing surrounding said secondary combustion chamber with the air from said fan passing between said insulating ring and said secondary combustion chamber.
 3. A device as claimed in claim 2 wherein a metallic shield of generally cylindrical form encloses said insulating ring.
 4. A device as claimed in claim 3 including an outlet bell on the downstream end of said secondary combustion chamber for directing the products of combustion therefrom into the outlet end of said housing to mix with the air flowing past said secondary combustion chamber.
 5. A device as claimed in claim 4 wherein said primary combustion chamber has a reduced diameter outlet for momentarily retaining the combustion therein to insure complete combustion of the oil. 